All categories

2 years ago

How do i find the value of a variable?

Mathematics

1 answer:

photoshop1234 [79]2 years ago

5 0

To find the value of a variable you must know the basics of pre-Algebra.

Example:

2x+9=39

To find he answer of this you must subtract 9 from both sides

Then you are left with…

2x=30

Since 2x=30 means 2 times x equals 30

You can divide 2 from both sides to find the answer

Which is…

x=15

You might be interested in

What interest rate is needed

KatRina [158]

Answer:

How to calculate interest rate

Step 1: To calculate your interest rate, you need to know the interest formula I/Pt = r to get your rate. ...

I = Interest amount paid in a specific time period (month, year etc.)

P = Principle amount (the money before interest)

t = Time period involved.

r = Interest rate in decimal.

5 0

2 years ago

What is the inverse of the following function?

igomit [66]

If they are just looking for the “inverse” which means flip it it’ll be 5radical (which the the v shape looking bar) x-4 = h(x)

3 0

3 years ago

Read this passage about animal testing. Which answer provides the best description of the passage?

rusak2 [61]

Answer:

India, isreal and the European union continue to allow animal testing because it is necessary for some products

6 0

2 years ago

Beth’s annual salary is $20,000. She also earns a variable percent commission on her sales over $500. The percent commission var

slava [35]

Answer:

Step-by-step explanation:

Here, we want to select the option that best describes the commission earned;

In the question, we are told that the commission is a certain percentage variable on the amount of her sales;

Thus , mathematically to get the percentage commission, we simply need to have;

p(x) of f(x)

This simply refer to placing f(x) into p(x) which can be rewritten as ;

p o f(x)

The closest answer to this is the first option A

6 0

3 years ago

The population of Canyon Edge is 210,000, and the rate of population growth is 12.5%.

sergejj [24]

For this case we have a function of the form:
$y = A * (b) ^ x
$
Where,
A: initial population
b: growth rate
x: number of years.
We then have the following function:
$y = 210000 * (1,125) ^ x
$
For x = 4 years we have:
$y = 210000 * (1,125) ^ 4

 y = 336379$
Answer:
the formula for exponential growth is:
y = 210000 * (1,125) ^ x
The population of Canyon Edge after 4 years is:
y = 336379

3 0

3 years ago